Boat fender



FIG. 1 is a top plan view of a boat fender showing my new design.

FIG. 2 is a left side elevational view thereof, the right side elevational view being a mirror image.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a front elevational view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a boat fender, as shown and described. 